The FN 509 is a striker-fired 9mm pistol developed from the proven FN service-pistol architecture and refined to meet the demanding performance requirements of the U.S. military Modular Handgun System program. Extensive testing focused on reliability, ammunition compatibility, and durability across more than one million rounds. This no-manual-safety model features a 4-inch barrel, 17+1 capacity, a polymer frame and grip, fixed 3-dot sights, and an integrated trigger safety.

Key features

• Chambered in 9mm for widely available defensive and training ammunition
• 17+1 capacity supports extended shooting sessions and defensive use
• Striker-fired semi-automatic action provides consistent operation
• Integrated trigger safety helps prevent unintended discharge
• 4-inch barrel balances handling, sight radius, and practical accuracy
• Fixed 3-dot sights provide a familiar sight picture for fast target acquisition

The FN 509 delivers a durable, duty-ready pistol configuration with dependable capacity and straightforward controls.